Can a teenage girl have PCOS?

i'm a 16 year old girl and my mom has poly-cystic ovarian syndrome and i seem to have many of the same symptoms. excessive hair growth, weight problems and irregular periods. Could i possibly have this? i've told my mom and she just told me not to worry about it because even if i did have it there wouldn't be anything i could do. :( i 'm really getting worried that this could make me infertile and lead to other complications is there anything i could do to stop this or at least slow it down? Can you even get it as a teenager ?